Use of personnel and facilities.

To the extent not prohibited by law, the trust department of a bank or association, for or in connection with any of its fiduciary functions or trust business or related activities, may utilize personnel, facilities, and services of the commercial department of that bank or the nontrust departments of that association and of any business organization which is a bank holding company under the provisions of the Bank Holding Company Act of 1956, as amended (12 U.S.C. ss. 1841 et seq.), or a savings and loan holding company of which that bank is a subsidiary as defined in said act or that association is a subsidiary, or of any other such subsidiary of that bank or savings and loan holding company; and, to the same extent, the commercial department of a bank or the nontrust departments of an association or any such bank or savings and loan holding company of which that bank or association is a subsidiary, or any other subsidiary of such bank or savings and loan holding company, for or in connection with any of the business activities or functions of such commercial department or nontrust departments, bank or savings and loan holding company, or other subsidiary, may utilize personnel, facilities, and services of the trust department of such bank or association.